-/* src/vm/jit/arm/linux/md.c - machine dependent arm linux functions
+/* src/vm/jit/arm/linux/md-os.c - machine dependent ARM Linux functions
- Copyright (C) 1996-2005, 2006 R. Grafl, A. Krall, C. Kruegel,
- C. Oates, R. Obermaisser, M. Platter, M. Probst, S. Ring,
- E. Steiner, C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich,
- J. Wenninger, Institut f. Computersprachen - TU Wien
+ Copyright (C) 1996-2005, 2006, 2007, 2008
+ CACAOVM - Verein zur Foerderung der freien virtuellen Maschine CACAO
+ Copyright (C) 2008, 2009 Theobroma Systems Ltd.
This file is part of CACAO.
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA.
- Contact: cacao@cacaojvm.org
-
- Authors: Michael Starzinger
-
- Changes: Christian Thalinger
-
- $Id: md.c 166 2006-01-22 23:38:44Z twisti $
-
*/
#include "config.h"
-#include "vm/types.h"
-
-#include "vm/jit/arm/md-abi.h"
+#include <stdint.h>
#define ucontext broken_glibc_ucontext
#define ucontext_t broken_glibc_ucontext_t
#define scontext_t struct sigcontext
-#include "mm/memory.h"
-#include "vm/exceptions.h"
-#include "vm/signallocal.h"
-#include "vm/stringlocal.h"
+#include "vm/types.h"
+
+#include "vm/jit/arm/md.h"
+#include "vm/jit/arm/md-abi.h"
+
+#include "threads/thread.hpp"
+
+#include "vm/signallocal.hpp"
+
#include "vm/jit/asmpart.h"
-#include "vm/jit/stacktrace.h"
+#include "vm/jit/executionstate.h"
+#include "vm/jit/trap.hpp"
+
+
+/**
+ * Signal handler for hardware exceptions.
+ */
+void md_signal_handler_sigsegv(int sig, siginfo_t *siginfo, void *_p)
+{
+ ucontext_t* _uc = (ucontext_t*) _p;
+ scontext_t* _sc = &_uc->uc_mcontext;
+
+ /* ATTENTION: glibc included messed up kernel headers we needed a
+ workaround for the ucontext structure. */
+
+ void* xpc = (u1 *) _sc->arm_pc;
+
+ // Handle the trap.
+ trap_handle(TRAP_SIGSEGV, xpc, _p);
+}
+
+
+/**
+ * Illegal instruction signal handler for hardware exception checks.
+ */
+void md_signal_handler_sigill(int sig, siginfo_t *siginfo, void *_p)
+{
+ ucontext_t* _uc = (ucontext_t*) _p;
+ scontext_t* _sc = &_uc->uc_mcontext;
+
+ /* ATTENTION: glibc included messed up kernel headers we needed a
+ workaround for the ucontext structure. */
+
+ void* xpc = (void*) _sc->arm_pc;
+
+ // Handle the trap.
+ trap_handle(TRAP_SIGILL, xpc, _p);
+}
-/* md_signal_handler_sigsegv ***************************************************
+/* md_signal_handler_sigusr2 ***************************************************
- NullPointerException signal handler for hardware null pointer
- check.
+ Signal handler for profiling sampling.
*******************************************************************************/
-void md_signal_handler_sigsegv(int sig, siginfo_t *siginfo, void *_p)
+#if defined(ENABLE_THREADS)
+void md_signal_handler_sigusr2(int sig, siginfo_t *siginfo, void *_p)
{
- ucontext_t *_uc;
- /*mcontext_t *_mc;*/
- scontext_t *_sc;
- u4 instr;
- ptrint addr;
- ptrint base;
- u1 *pv;
- u1 *sp;
- u1 *ra;
- u1 *xpc;
+ threadobject *thread;
+ ucontext_t *_uc;
+ scontext_t *_sc;
+ u1 *pc;
+
+ thread = THREADOBJECT;
_uc = (ucontext_t*) _p;
_sc = &_uc->uc_mcontext;
- /* ATTENTION: glibc included messed up kernel headers */
- /* we needed a workaround for the ucontext structure */
-
- addr = (ptrint) siginfo->si_addr;
- /*xpc = (u1*) _mc->gregs[REG_PC];*/
- xpc = (u1*) _sc->arm_pc;
-
- instr = *((s4*) xpc);
- base = *((s4*) _sc + OFFSET(scontext_t, arm_r0)/4 + ((instr >> 16) & 0x0f));
-
- if (base == 0) {
- pv = (u1*) _sc->arm_ip;
- sp = (u1*) _sc->arm_sp;
- ra = (u1*) _sc->arm_lr; /* this is correct for leafs */
-
- _sc->arm_r10 = (ptrint) stacktrace_hardware_nullpointerexception(pv, sp, ra, xpc);
- _sc->arm_fp = (ptrint) xpc;
- _sc->arm_pc = (ptrint) asm_handle_exception;
- } else {
- throw_cacao_exception_exit(string_java_lang_InternalError,
- "Segmentation fault: %p (pc=%p, instr=%x, base=%p)\n",
- addr, xpc, instr, base);
- }
+ pc = (u1 *) _sc->arm_pc;
+
+ thread->pc = pc;
}
+#endif
-/* thread_restartcriticalsection ***********************************************
+/**
+ * Read the given context into an executionstate.
+ *
+ * @param es execution state
+ * @param context machine context
+ */
+void md_executionstate_read(executionstate_t *es, void *context)
+{
+ ucontext_t *_uc;
+ scontext_t *_sc;
+ int i;
- TODO: document me
+ _uc = (ucontext_t *) context;
+ _sc = &_uc->uc_mcontext;
-*******************************************************************************/
+ /* ATTENTION: glibc included messed up kernel headers we needed a
+ workaround for the ucontext structure. */
-#if defined(ENABLE_THREADS)
-void thread_restartcriticalsection(ucontext_t *_uc)
+ /* read special registers */
+
+ es->pc = (u1 *) _sc->arm_pc;
+ es->sp = (u1 *) _sc->arm_sp;
+ es->pv = (u1 *) _sc->arm_ip;
+ es->ra = (u1 *) _sc->arm_lr;
+
+ /* read integer registers */
+
+ for (i = 0; i < INT_REG_CNT; i++)
+ es->intregs[i] = *((int32_t*) _sc + OFFSET(scontext_t, arm_r0)/4 + i);
+
+ /* read float registers */
+
+ for (i = 0; i < FLT_REG_CNT; i++)
+ es->fltregs[i] = 0xdeadbeefdeadbeefULL;
+}
+
+
+/**
+ * Write the given executionstate back to the context.
+ *
+ * @param es execution state
+ * @param context machine context
+ */
+void md_executionstate_write(executionstate_t *es, void *context)
{
+ ucontext_t *_uc;
scontext_t *_sc;
- void *critical;
+ int i;
+ _uc = (ucontext_t *) context;
_sc = &_uc->uc_mcontext;
- critical = critical_find_restart_point((void *) _sc->arm_pc);
+ /* ATTENTION: glibc included messed up kernel headers we needed a
+ workaround for the ucontext structure. */
+
+ /* write integer registers */
- if (critical)
- _sc->arm_pc = (ptrint) critical;
+ for (i = 0; i < INT_REG_CNT; i++)
+ *((int32_t*) _sc + OFFSET(scontext_t, arm_r0)/4 + i) = es->intregs[i];
+
+ /* write special registers */
+
+ _sc->arm_pc = (ptrint) es->pc;
+ _sc->arm_sp = (ptrint) es->sp;
+ _sc->arm_ip = (ptrint) es->pv;
+ _sc->arm_lr = (ptrint) es->ra;
}
-#endif
/*
projects / cacao.git / blobdiff